Spring assembly



May 31, 1932. F. R. ZIMMERMAN SPRING ASSEMBLY Filed Dec. 31, 1929 m a lnUarLCo'r %4 ZZJ WWM 13y 260 Patented May 31, 1932 FRED R. ZIIVINEERMAN, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

PATENT LF H- i M BURTON-DIXIE CORPORATION, OF CHICAGO, ILLINOIS, A'CORPORATION OF DELA- WARE Application filed December 31, 1929. SerialNo. 417,668. I 3.".

The present invention relates to spring structures or sprlng assemblles, such as are used in mattresses, cushions, bed-springs, etc.,

tionable displacement or dislodgment of the springs.

Although not limited to such employment, the new type of spring construction is well adapted for use in spring mattresses asso-' ciated with suitable padding or filling.

Spring assemblies of this character ordinarily embody a number of upright, coiled springs and this invention concerns more particularly the means for tying or connecting the end coils of such springs together in a manner to lnterfere 1n minimum degree in the performance of their cushioning functions.

To enable those acquainted with this art to fully understand the invention, both from structural and operating standpoints, in the accompanying drawings, forming a part of this specification and to which reference should be had in connection with the following detailed description, a present, desirable or preferred embodiment of the invention has been presented, and, for simplicity, like reference numerals have been employed to dessignate the same parts throughout the several views.

In the drawings Figure 1 is a fragmentary, top, plan View of a portion of the spring assembly;

Figure 2 is a vertical section on line 22 ter may flex with great freedom and without substantial resistance from the neighboring springs to which they are thus rockingly of Figure 1;

Figure 3 is an enlarged plan of one of the hinge connections of the tying or connecting 7 wire with the the top coil of one of the upright, cushion springs;

Figure 4 is across-section 011 line 44 of Figure 3; and

Figure 5 is a plan of a portion of one of the connecting or uniting wires before it is applied or hinged to the end rings of the vertical springs.

SPRING ASSEMBLY Asis frequent in spring-cushions of this style, the new one illustrated includes a"p1urality of rows of erect, hour-glass, coiled springs 11, 11 arranged in the staggered relai tion depicted, whereby'the springs of any row are in offset position with reference to those of the two rows on the opposite sides thereof,

7 The top and the bot-tom coils or convolu-.

tions of such springs are connected together in like manner, so that a description of the way of joining the top coils together will be adequate. 3

As is fully illustrated, the round, end coilor ring 12 of each such spring is offset at two,

diametrically-opposite points to provide a pair of short, parallel, straight sections 13, 13

to afford bearings for the associated, connecting or joining wires 14, 14. 1

Each such wire 14, before being applied and secured to thecushion-springs, is of the zigzag or wavy form presented in Figure 5 with spaced projections 15, 15 extending alternately in oppositedirections.

Each connecting'wire, as shown, joins together the springs of two adjacent rows, being in turn connected to the spring of one row, then to the proximate one of the next row, and then to the adjoining one of the first row, and so on. r

In attaching each such wire 14 to the end coils'or rings of the springs, the projections 15 are wound around the parts 13 about two times, forming the convolutions 16' which thushinge the wire to the various end-coils, V the parts 16:being free or loose enough to turn or rock on the sections 13. V

Because of this hinged relation between the connecting wires and the springs, the latthe parts 13 and their turning movements thereon occur" with substantial exemption from restraint and without noise.-

Thus the various sections of the spring cushion may be depressed or compressed locally and may return to normal position with ease and facility giving the cushion, as a whole, marked resiliency and unusual elasticity.

Where a spring assembly of this kind is employed in a mattress, whichiis more or less frequently reversed or turned: upside: down on the bed, it lends itself admirably to such use, both sides of the spring structure being constructed in the same manner.

7 The principles of construction embodied in the spring shown and described may also be employed to advantage and benefit in bedsprings in which the lower ends of the up right springs are anchored in-place and'in -which the spring is not adapted for use in reversed position.

Those trained in'this art will readilyiunderstand that the invention is not limited and restricted to the precise and exa'ctidefitail'sofstructure shown and described and "that these maybe modifiediwithin a comparatively wide range without departure from the heart and essence of the invention, as defined by the appended claim, and without'the loss or sacrifice "of any of its substantial benefits or advantages.

' In the exampleshowrnthe wires 14 extend over the tops of the end-coils 12 and are then wrapped or vwound around the sections 13,

but, if preferred, thewires 14.- may extend below'the top-coils .12.and be in similar manner' twisted around the parts 13 to form the hinges.

I claim f Inaspring-assembly, the combination of a plurality of rows of upright cushion coiled ,springs with tend-coils with'the springs of adjacent rows in'staggered relation, and'tiewires .of general wave form alternately hingedly connected to the end-coils of the springs of adjacent .rowsin sequence, each "such end-coil having two such hinge connec- "tions at diametrically opposite, points, each "such end-coil at such hinge points being deformed to provide substantially straight portions encircledv by double-wire laterally offset-parts of the tie -wires coiled around said .strai'ghtportions and providing within the coils, practically-round openings "of substan- *'tial ly*the diameter as the Wire of such "straightsections to form the' hinges, each of said hinges being capable ofturning practisite directions, :such tie -wire -'coiled portions co-operating with'the'bends in'f'the spring -*end-coils at the ends of s aid str'aight sections to prevent substantially relative axial sh'ifting of the parts of the hinges.

In-witness whereof I'have hereunto set my I FRED" 'ZIMMERMAN. 

